Designation:D6534−18StandardPracticeforDeterminingthePeakForce-to-ActuateofaMechanicalPumpDispenser1ThisstandardisissuedunderthefixeddesignationD6534;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthedeterminationofthepeakforce-to-actuate,sometimescalledforce-to-actuate(FTA),ofamechanicalpumpdispenser.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecificprecautionarystatementsaregiveninSection5.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D3890TestMethodforNumberofStrokestoPrimeaMechanicalPumpDispenser3.SignificanceandUse3.1Thispracticecanbeusedtocomparethepeakforce-to-actuateperformanceofdifferentmechanicalpumpdispensers.3.2Thispracticecanbeusedtodeterminetheperceivedeaseofuseofamechanicalpumpdispenser.3.3Thispracticecanbeusedtodeterminethepeakforce-to-actuateofamechanicalpumpdispenser.4.Apparatus4.1MotorizedCompressionTester,orCustomForce-to-ActionMachine,withthecapabilitytoactuatethemechanicalpumpdispenserataconstantvelocityandadjustablestrokelengthswhileaccuratelymeasuringtheresultingforce(thatis,loadcell).NOTE1—SincethevelocityduringactuationwillaffecttheFTAofcertainmechanicalpumpdispenserdesigns,caremustbetakeninselectingthecorr...
